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Choosing between Different Time-Varying Volatility Models for Structural Vector Autoregressive Analysis

Helmut Lütkepohl () and Thore Schlaak

No 1672, Discussion Papers of DIW Berlin from DIW Berlin, German Institute for Economic Research

Abstract: The performance of information criteria and tests for residual heteroskedasticity for choosing between different models for time-varying volatility in the context of structural vector autoregressive analysis is investigated. Although it can be difficult to find the true volatility model with the selection criteria, using them is recommended because they can reduce the mean squared error of impulse response estimates substantially relative to a model that is chosen arbitrarily based on the personal preferences of a researcher. Heteroskedasticity tests are found to be useful tools for deciding whether time-varying volatility is present but do not discriminate well between different types of volatility changes. The selection methods are illustrated by specifying a model for the global market for crude oil.

Keywords: Structural vector autoregression; identification via heteroskedasticity; conditional heteroskedasticity; smooth transition; Markov switching; GARCH (search for similar items in EconPapers)
JEL-codes: C32 (search for similar items in EconPapers)
New Economics Papers: this item is included in nep-ecm, nep-ets and nep-ore
Date: 2017
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Citations: View citations in EconPapers (1) Track citations by RSS feed

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Journal Article: Choosing Between Different Time‐Varying Volatility Models for Structural Vector Autoregressive Analysis (2018) Downloads
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